Piston construction



March 19, 1935. E, IMEY'E R v 1,994,861

PISTON CONSTRUCTION Filed Jun 18, 1954 s Shets-Sheet 1 Inventor sie ofien I. Mg er 9 By i flllomey March 19, 1935. s. E. MEYER 1,994,861

OOOOOOOOO STRUCTION Filed June 18, 1934 3 Sheets-Sheet 2 March 19, 1935. 5 E, MEYER 5 1,994,861

PISTON CONSTRUCTION ile June 18, 1934 3 Sheets-Sheet 3 It "Kg.

Inventor I SfeybemEMfj/ I flitomey Faientecl Mar. 19, 1935 srrs 4 Claims.

This invention relates to new and useful im-. provements in the general art of. internal combustion en ines and more particularly to a novel piston construction. l I

lhe principal object of the present invention is to provide a piston which will eliminate the use of the commonly known piston rings and their resultant quick wear.

Another important object of the present invention is to provide a piston wherein the wrist pin bearing is constructed in such a manner as to reduce wear and entirely eliminate the usual skirts found on practically all types of piston constructions.

These and various other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a vertical sectional view through an engine showing the novel piston structure operative therein.

Figure 2 represents a vertical sectional View through the piston.

Figure 3 represents a horizontal sectional view taken substantially on line 3-3 of Figure 2.

Figure 4 represents a horizontal sectional view taken substantially on line 4-41 of Figure 2.

Figure 5 represents a side elevational view of the skeleton of the piston.

Figure 6 represents a top plan view of the piston.

Fi ure '7 represents a horizontal sectional View taken substantially on line 7-7 of Figure 5.

Figure 8 represents a horizontal sectional view taken substantially on line 8-8 of Figure 5.

Figure 9 represents a top plan view of one of the packing sections.

Figure 10 represents an inside edge elevational view of one of the packing sections.

Figure 11 represents a top plan view of one of the wrist pin bearing sections.

Figure 12 represents an edge elevational view of the bearing sections.

Figure 13 represents a perspective view of one of the sealing blocks.

Referring to the drawings wherein like numer-' als designate like parts, it can be seen in Figure 1 that numeral 5 generally refers to a conventional type of internal combustion engine in which is shown the novel piston construction generally referred to by numeral 7. As is clearly shown in Figures 1 and 2, numeral 8 represents the usual connecting rod for the piston which is provided at its upper end with the usual wrist pin 9.

In carrying out the present invention, the piston involves askeleton structure clearly shown in Figure 5. This skeleton construction consists of the disks 1G, 11 and 12. The lower disk 12 is connected to the intermediate disk 11 in spaced relation to each other by thebars 13-13, while the central portion of the disk 11 is connected to the central portion of the disk 10 by the square shaped post 14.

The space between the disks 10 and 11 is for the packing assembly clearly'shown in section in Figure 2 while the space between the disks 11 and 12 is intended for the expansible wrist pin hearing.

In describing the packing means, it will be found that the packing is made of two units superimposed, each unitjbeing a pair of sections, each of which is constructed as shown in Figure 9 and the relation of these sections are clearly shown in Figure 3. It will be observed in Figures 3, 9, and 10 that each of the sections is of semi-circular construction and denoted by the numeral 15. Each section 15 at its edge portion opposed to the other section is provided with a rectangularly-shaped cut-away portion 16 and a pair of polygonally-shaped recesses 17-17.

When the sections 15-15 are brought together, the recesses 1'7 receive the ends of the sealing blocks 18 while the rectangularly-shaped cutaway portions 16 receive half portions of the post 14. Coiled compressible springs 19 are located in the sealing blocks 18 and impinge at their ends against the inner ends of the recesses 17 so as to tend to urge the sections 15-15 apart and against the wall of the cylinder in which the piston is located.

It will be observed in Figure 3 that the sections 15-15 are of the upper unit, while the lower unit is shown in dotted lines underneath and disposed at right angles to the disposition of the sections 15-15 of the upper unit.

In regard to the wrist pin bearing unit shown in Figures 4, 11, and 12, it can be seen that the sections 20-20 of this unit are provided at their straight edge portions with recesses 21-21 for receiving longitudinal edge portions of the connecting bars 13-13 of the skeleton shown in Figure 5, as well as recesses 22-22 for receiving adjacent ends of the coiled compressible springs 23-23 which serve to urge these sections 20-20 apart and against the wall of the cylinder in which the piston is located.

Each section has its straight edge portion provided with an intermediately located square recess 24 and these recesses 24 serve to receive the hub or knuckle 25 on the upper end of the connecting rod 8 through which the wrist pin 26 extends to terminate at its ends in the recesses 27--27 of the sections 2020, these recesses 27-27 being reduced continuations of the recesses 24.

There are only two of these sections 2020 for the wrist pin and this assembly cooperates with the foregoing packing assembly to prevent the loss of compression and at the same time do away with the cumbersome skirt now found on piston constructions.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size, and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. A piston construction comprising a plurality of spacedly connected disks, semi-circular shaped plate sections arranged between certain of the disks and provided with'springs between the same for urging the sections outwardly, and a pair of semi-circular shaped sections interposed between another pair of disks and provided with recesses therein for receiving the end portions of a connection rod wrist pin.

2. A piston construction comprising a skeleton structure including a top disk, a bottom disk, an intermediate disk, connecting means between the disks for maintaining the disks in spaced relation, an expansible packing assembly between the intermediate disk and the top disk, a pair of semi-circular blocks between the bottom disk and the intermediate disk, said bottom disk being provided with an opening therein for receiving the upper end of a connecting rod, the opposed edge portions of the said blocks being provided with recesses for receiving the end portions of the wrist pin carried by the said connecting rod.

3. A piston construction comprising a skeleton structure including a top disk, a bottom disk, an intermediate disk, connecting means between the disks for maintaining the disks in spaced relation, an expansible packing assembly between the intermediate disk and the top disk, a pair of semi-circular blocks between the bottom disk and the intermediate disk, said bottom disk being provided with an opening therein for receiving the upper end of a connecting rod, the opposed edge portions of the said blocks being provided with recesses for receiving the end portions of the wrist pin carried by the said connecting rod, and spring means interposed between said blocks for urging the same apart.

4. A piston construction comprising a skeleton structure including a top disk, a bottom disk, an intermediate disk, connecting means between the disks for maintaining the disks in spaced relation, an expansible packing assembly between the intermediate disk and the top disk, a pair of semi-circular blocks between the bottom disk and the intermediate disk, said bottom disk being provided with an opening therein for receiving the upper end of a connecting rod, the opposed edge portions of the said blocks being provided with recesses for receiving the end portions of the wrist pin carried by the said connecting rod, and spring means interposed between said blocks for urging the same apart, said bottom disk and intermediate disk being connected by bar members, the opposed edge portions of the said blocks being provided with recesses to accommodate the said bar members.

STEPHEN E. MEYER. V 

